Study Details

Study Title: Performance Analysis of Centerline and Shoulder Rumble Strips Installed in Combination in Washington State

Authors: D. Olson, M. Sujka, and B. Manchas

Publication Date:APR, 2013

Abstract: WSDOT began installing rumble strips on undivided highways in 1999 as a countermeasure for roadway departure crashes. Installations on the shoulders were intended to reduce run-off-the-road crashes, while centerline rumble strips targeted reductions in cross-centerline crashes. A March 2011 report detailed the performance of centerline rumble strips on Washington State highways. This study: - Examines the combined effects of centerline and shoulder rumble strips. - Details the performance of rumble strips on undivided highways in Washington State under a variety of conditions. - Explores various traffic volumes, geometric conditions, lane and shoulder widths, and driver contributing circumstances. - Compares various installation scenarios with shoulder and centerline rumble strip installation at different times, as well as simultaneous installation.

Study Citation: Olson, D., M. Sujka, and B. Manchas. "Performance Analysis of Centerline and Shoulder Rumble Strips Installed in Combination in Washington State". Washington State Department of Transportation, Office of Research and Library Services, WA-RD 799.1, April 2013.

Study Report: Download the Study Report Document


CMFs Associated With This Study

Category: Roadway

Countermeasure: Install centerline and shoulder rumble strips

CMF CRF(%)QualityCrash TypeCrash SeverityRoadway TypeArea Type
0.34662 StarsHead on,Run off road,SideswipeAllNot specifiedRural
0.44562 StarsHead on,Run off road,SideswipeK,ANot specifiedRural
0.29712 StarsHead on,SideswipeAllNot specifiedRural
0.42557.52 StarsHead on,SideswipeK,ANot specifiedRural
0.38461.62 StarsRun off roadAllNot specifiedRural
0.46353.72 StarsRun off roadK,ANot specifiedRural

Countermeasure: Install centerline rumble strips on roads with existing shoulder rumble strips

CMF CRF(%)QualityCrash TypeCrash SeverityRoadway TypeArea Type
0.55444.62 StarsHead on,Run off road,SideswipeAllNot specifiedRural
0.75824.21 StarHead on,Run off road,SideswipeK,ANot specifiedRural
0.35364.72 StarsHead on,SideswipeAllNot specifiedRural
0.75824.21 StarHead on,SideswipeK,ANot specifiedRural
1.085-8.51 StarRun off roadAllNot specifiedRural

Category:Shoulder treatments

Countermeasure: Install shoulder rumble strips

CMF CRF(%)QualityCrash TypeCrash SeverityRoadway TypeArea Type
1.123-12.31 StarHead on,Run off road,SideswipeAllNot specifiedRural
1.053-5.31 StarHead on,SideswipeAllNot specifiedRural
1.404-40.41 StarRun off roadAllNot specifiedRural

Countermeasure: Install shoulder rumble strips on roads with existing centerline rumble strips

CMF CRF(%)QualityCrash TypeCrash SeverityRoadway TypeArea Type
0.62537.52 StarsHead on,Run off road,SideswipeAllNot specifiedRural
0.67832.21 StarHead on,Run off road,SideswipeK,ANot specifiedRural
0.9326.81 StarHead on,SideswipeAllNot specifiedRural
01001 StarHead on,SideswipeK,ANot specifiedRural
0.53472 StarsRun off roadAllNot specifiedRural
0.84715.31 StarRun off roadK,ANot specifiedRural